Fishway inlet system luring grass carp, design method of fishway inlet system luring grass carp and fish luring flow speed calibration device

A technology of inlet flow rate and fishway, which is applied in water conservancy engineering equipment, water conservancy engineering, sea area engineering, etc., can solve problems such as shortage, and achieve the effect of complex flow state, simple water flow form and small engineering quantity

Inactive Publication Date: 2016-10-26
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows ponds (fish tanks) without any fencing material to capture their catches from rainwater runoff on land where they live). By setting different conditions like optimum fluid rates during entry into these areas along its length, we aim to provide better ways to collect fish caught within them.

Problems solved by technology

This patented technical problem addressed in this patent relates to improving the efficiency of guiding fluid into fish-fishing gates during certain stages when they shouldn't be able to access them due to their poor navigability caused by turbulence on rough surfaces such as rocks near the gate opening.

Method used

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  • Fishway inlet system luring grass carp, design method of fishway inlet system luring grass carp and fish luring flow speed calibration device
  • Fishway inlet system luring grass carp, design method of fishway inlet system luring grass carp and fish luring flow speed calibration device
  • Fishway inlet system luring grass carp, design method of fishway inlet system luring grass carp and fish luring flow speed calibration device

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Embodiment 1

[0038] This embodiment is a fishway inlet system that induces grass carp to enter the fishway, such as figure 1 shown. This embodiment includes: a fishway 1 and its fishway inlet 2 (that is, the fishway engineering fish inlet) arranged along the river flow direction, the side of the fishway and the fishway inlet is close to the bank 3 of the river , the other side is provided with the fish lure water flow channel 4 and the fish lure water flow channel outlet 5 in the same direction as the fishway and the fishway mouth. figure 1 Arrows A, B, and C in the figure respectively represent the water flow of the river, the water flow of the fish-lure water flow channel, and the water flow of the fishway.

[0039] The fishway described in this embodiment is located on the bank of one side of the river, and the water flow channel for luring fish is arranged in parallel with the fishway. The fish lure water flow is located between the fishway and the riverway, adjacent to the fishway...

Embodiment 2

[0046] This embodiment is an improvement of Embodiment 1, and it is a refinement of the water flow channel for luring fish in the embodiment. The fish lure water flow channel described in the present embodiment is provided with flow regulating valve 401, as figure 1 shown.

[0047] The water flow channel for luring fish can be an open channel or a pipeline pressurization method. If it is the way of pipeline pressurization, a common pressure regulating valve can be used to adjust parameters such as water volume, pressure, and flow rate of the water flow channel for luring fish. If open channels are used, parameters such as water volume and flow velocity can be adjusted using flat gates.

Embodiment 3

[0049] This embodiment is an improvement of the second embodiment, and is a refinement of the second embodiment on the water flow velocity of the water channel for luring fish. The water flow velocity of the fish luring water flow channel described in this embodiment is 2.3 times of the water flow velocity of the fishway mouth.

[0050] There is a certain relationship between the water flow velocity of the fish luring water flow channel and the flow velocity of the fishway. The two streams cooperate with each other, so that a good fish luring effect can be obtained. This embodiment is a proportional relationship between the outlet flow velocity and the fishway flow velocity of the fish-lure water flow channel for grass carp.

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PUM

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Abstract

The invention relates to a fishway inlet system luring grass carp, a design method of the fishway inlet system luring the grass carp and a fish luring flow speed calibration device. The fishway inlet system luring the grass carp comprises a fishway arranged in the flow direction of a river and a fishway inlet of the fishway. One side of the fishway and one side of the fishway inlet are close to the river bank on one side of the river. The other sides of the fishway and the fishway inlet are provided with a fish luring water flow channel and a fish luring water flow channel water outlet, wherein the fish luring water flow channel and the fish luring water flow channel water outlet are identical with the fishway and the fishway inlet in direction. According to the fishway inlet system luring the grass carp, the design method of the fishway inlet system luring the grass carp and the fish luring flow speed calibration device, only one stream of fish luring water flow needs to be arranged, and a water flow condition of luring fishes can be created through cooperation of the fish luring water flow and the fishway water flow. Only two water flow parameters need to be calibrated and are the optimum flow speed of the fishway inlet and the optimum rate of the flow speed of the fish luring water flow channel water outlet to the flow speed of the fishway inlet. Compared with other water flow fish luring methods, the two water flow parameter values are definitely provided. The fishway inlet is simple in water flow form and small in project amount. The design method of the fishway inlet system luring the grass carp can be not only directly used for hydraulic design of the fishway inlet for the grass carp but also conveniently popularized to design of fish luring water flows of fishway inlets for other fishes.

Description

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Claims

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Application Information

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Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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